Create standard environment setups for testing

[YJDoc2]

Currently we have two default vagrant files, one vagrantfile for podman and one vagrantfile for containerd. Out of these the default ones are broken see #2882 . We also run into issues as mentioned in #361 (comment) where contributors don't have access to specific cgroup envs, and have problems.

We should have some vagrant files that can be used as the "standard" developing environment making it easier for devs and testing.

Currently I'm thinking of following files :

• One file with cgroups v1 setup
• One file with cgroups v2 setup, and as podman and containerd both need v2, we can also have their deps in here.

I think this would make the development and testing easier .

[posutsai]

After the comment, I have done some study about using VMs as dev environment. I wonder if testing youki with LXD system container would be lighter and more friendly. According to the official guide, docker and containerd seems working fine in the system container.